package mhuu.util;
//
//Source code recreated from a .class file by IntelliJ IDEA
//(powered by Fernflower decompiler)
// 

import java.io.IOException;
import java.io.OutputStream;
import java.io.PushbackInputStream; 

public class BASE64Decoder extends CharacterDecoder {
 private static final char[] pem_array = new char[]{'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'};
 private static final byte[] pem_convert_array = new byte[256];
 byte[] decode_buffer = new byte[4];

 public BASE64Decoder() {
 }

 protected int bytesPerAtom() {
     return 4;
 }

 protected int bytesPerLine() {
     return 72;
 }

 protected void decodeAtom(PushbackInputStream var1, OutputStream var2, int var3) throws IOException {
     byte var5 = -1;
     byte var6 = -1;
     byte var7 = -1;
     byte var8 = -1;
     if(var3 < 2) {
         throw new IOException("BASE64Decoder: Not enough bytes for an atom.");
     } else {
         int var4;
         do {
             var4 = var1.read();
             if(var4 == -1) {
                 throw new IOException();
             }
         } while(var4 == 10 || var4 == 13);

         this.decode_buffer[0] = (byte)var4;
         var4 = this.readFully(var1, this.decode_buffer, 1, var3 - 1);
         if(var4 == -1) {
             throw new IOException();
         } else {
             if(var3 > 3 && this.decode_buffer[3] == 61) {
                 var3 = 3;
             }

             if(var3 > 2 && this.decode_buffer[2] == 61) {
                 var3 = 2;
             }

             switch(var3) {
             case 4:
                 var8 = pem_convert_array[this.decode_buffer[3] & 255];
             case 3:
                 var7 = pem_convert_array[this.decode_buffer[2] & 255];
             case 2:
                 var6 = pem_convert_array[this.decode_buffer[1] & 255];
                 var5 = pem_convert_array[this.decode_buffer[0] & 255];
             default:
                 switch(var3) {
                 case 2:
                     var2.write((byte)(var5 << 2 & 252 | var6 >>> 4 & 3));
                     break;
                 case 3:
                     var2.write((byte)(var5 << 2 & 252 | var6 >>> 4 & 3));
                     var2.write((byte)(var6 << 4 & 240 | var7 >>> 2 & 15));
                     break;
                 case 4:
                     var2.write((byte)(var5 << 2 & 252 | var6 >>> 4 & 3));
                     var2.write((byte)(var6 << 4 & 240 | var7 >>> 2 & 15));
                     var2.write((byte)(var7 << 6 & 192 | var8 & 63));
                 }

             }
         }
     }
 }

 static {
     int var0;
     for(var0 = 0; var0 < 255; ++var0) {
         pem_convert_array[var0] = -1;
     }

     for(var0 = 0; var0 < pem_array.length; ++var0) {
         pem_convert_array[pem_array[var0]] = (byte)var0;
     }

 }
}
